Difference between revisions of "BMOD 06142019"

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== Minutes ==
 
== Minutes ==
  
Attending: Juliette, Paul, Victoria, Ye, Tao, Sakib
+
* Introductions
 +
* Overview - Victoria
 +
** detector response to changes in beam
 +
** sequentially move in set of directions (beam modulation)
 +
** detector yield vs. <beam position> => slopes
 +
** partial derivative of bpm (or detector) vs. driving coil => sensitivities
 +
*** correlation plot or fit -> matrix, allows to calculate the slope
 +
** regression on natural beam motion also
 +
* Status - Ye and Victoria
 +
** coils work, know which direction
 +
** don't know whether positive current means a certain direction
 +
** modulation controls - sends current to coils, pause FFB
 +
** know which BPMs, and which work (tested during APEX)
 +
*** x motion the noise of the beam seemed larger
 +
*** probably because of energy lock not being on
 +
*** BPM12X at a location - should have large correlation with energy
 +
** don't know for a given coils - position and angle of beam (at target)
 +
** 5 BPMS 4AX, 4EX, 12X,
 +
** 3 x coils, 3 y coils - which is best to do analysis (Ye)
 +
** coil 1 and 3 for x may be different for PREX tune
 +
** Need a plan [[PREX2RunPlan2019#Establish Production Conditions | plan]]
 +
* Controls - Tao
 +
* Aggregator - Sakib
 +
* Documentation needed
 +
** [[Beam_Modulation | From Expert Tools]]
 +
** [[Beam_Mod_Portal | From Documentation Portal]]
 +
* meeting times
 +
 
 +
Attending: Juliette, Paul, Victoria, Ye, Tao, Sakib, Quinn, Dave Armstrong

Revision as of 09:28, 14 June 2019

In the process of editing and updating this page. Please contact Juliette Mammei crowder@jlab.org with questions or suggestions.


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PREX Main << Expert Tools << Beam Modulation << Meetings

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Agenda


Minutes

  • Introductions
  • Overview - Victoria
    • detector response to changes in beam
    • sequentially move in set of directions (beam modulation)
    • detector yield vs. <beam position> => slopes
    • partial derivative of bpm (or detector) vs. driving coil => sensitivities
      • correlation plot or fit -> matrix, allows to calculate the slope
    • regression on natural beam motion also
  • Status - Ye and Victoria
    • coils work, know which direction
    • don't know whether positive current means a certain direction
    • modulation controls - sends current to coils, pause FFB
    • know which BPMs, and which work (tested during APEX)
      • x motion the noise of the beam seemed larger
      • probably because of energy lock not being on
      • BPM12X at a location - should have large correlation with energy
    • don't know for a given coils - position and angle of beam (at target)
    • 5 BPMS 4AX, 4EX, 12X,
    • 3 x coils, 3 y coils - which is best to do analysis (Ye)
    • coil 1 and 3 for x may be different for PREX tune
    • Need a plan plan
  • Controls - Tao
  • Aggregator - Sakib
  • Documentation needed
  • meeting times

Attending: Juliette, Paul, Victoria, Ye, Tao, Sakib, Quinn, Dave Armstrong